Oracle Segments
Version 21c

General Information
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Dependencies
ALL_SEGMENTS DBA_SEGMENTS SYS_DBA_SEGS
CDB_SEGMENTS SEG$ USER_SEGMENTS
System Privileges
Create [Any] Cluster Create [Any] Indextype Create [Any] Table
Create [Any] Index Create [Any] Materialized View  
 
Queries
Segment Count by Schema and Tablespace SELECT owner, segment_type, tablespace_name, COUNT(*)
FROM dba_segments
GROUP BY owner, segment_type, tablespace_name
ORDER BY 2,3, 1;

OWNER              SEGMENT_TYPE       TABLESPACE_NAME  COUNT(*)
------------------ ------------------ ---------------- --------
SYS                CLUSTER            SYSAUX                  1
SYS                CLUSTER            SYSTEM                  9
CTXSYS             INDEX              YSAUX                 37
DBSFWUSER          INDEX              SYSAUX                  2
DBSNMP             INDEX              SYSAUX                  5
DVSYS              INDEX              SYSAUX                 50
GSMADMIN_INTERNAL  INDEX              SYSAUX                  6
MDSYS              INDEX              SYSAUX                 37
SYS                INDEX              SYSAUX                540
SYSTEM             INDEX              SYSAUX                 29
WMSYS              INDEX              SYSAUX                 56
XDB                INDEX              SYSAUX                 72
GSMADMIN_INTERNAL  INDEX              SYSTEM                  1
LBACSYS            INDEX              SYSTEM                  1
OJVMSYS            INDEX              SYSTEM                  3
OUTLN              INDEX              SYSTEM                  4
SYS                INDEX              SYSTEM                938
SYSTEM             INDEX              SYSTEM                 38
ORDDATA            INDEX              USERS                  12
ORDSYS             INDEX              USERS                   3
AUDSYS             INDEX              PARTITION AUDIT_TBSP   93
AUDSYS             INDEX              PARTITION SYSAUX        9
SYS                INDEX              PARTITION SYSAUX      634
SYSTEM             INDEX              PARTITION SYSAUX       77
SYS                INDEX              PARTITION SYSTEM     2048
AUDSYS             LOB                PARTITION AUDIT_TBSP   93
AUDSYS             LOB                PARTITION SYSAUX        9
SYS                LOB                PARTITION SYSAUX       60
SYS                LOBINDEX           AUDIT_TBSP              6
GSMADMIN_INTERNAL  LOBINDEX           SYSAUX                  1
MDSYS              LOBINDEX           SYSAUX                 18
SYS                LOBINDEX           SYSAUX                108
SYSTEM             LOBINDEX           SYSAUX                  7
WMSYS              LOBINDEX           SYSAUX                  6
XDB                LOBINDEX           SYSAUX                289
ORDSYS             LOBINDEX           SYSTEM                  3
OUTLN              LOBINDEX           SYSTEM                  1
SYS                LOBINDEX           SYSTEM                168
SYSTEM             LOBINDEX           SYSTEM                  3
SYS                LOBSEGMENT         AUDIT_TBSP              6
GSMADMIN_INTERNAL  LOBSEGMENT         SYSAUX                  1
MDSYS              LOBSEGMENT         SYSAUX                 18
SYS                LOBSEGMENT         SYSAUX                108
SYSTEM             LOBSEGMENT         SYSAUX                  7
WMSYS              LOBSEGMENT         SYSAUX                  6
XDB                LOBSEGMENT         SYSAUX                289
ORDSYS             LOBSEGMENT         SYSTEM                  3
OUTLN              LOBSEGMENT         SYSTEM                  1
SYS                LOBSEGMENT         SYSTEM                168
SYSTEM             LOBSEGMENT         SYSTEM                  3
SYS                NESTED TABLE       SYSAUX                  6
WMSYS              NESTED TABLE       SYSAUX                  1
SYS                NESTED TABLE       SYSTEM                  7
ORDDATA            NESTED TABLE       USERS                   2
SYS                ROLLBACK           SYSTEM                  1
SYS                SYSTEM STATISTICS  SYSAUX                  1
SYS                TABLE              AUDIT_TBSP              2
CTXSYS             TABLE              SYSAUX                 18
DBSFWUSER          TABLE              SYSAUX                  2
DBSNMP             TABLE              SYSAUX                  3
DVSYS              TABLE              SYSAUX                 25
GSMADMIN_INTERNAL  TABLE              SYSAUX                  5
MDSYS              TABLE              SYSAUX                 51
SYS                TABLE              SYSAUX                498
SYSTEM             TABLE              SYSAUX                 29
WMSYS              TABLE              SYSAUX                 30
XDB                TABLE              SYSAUX                 55
GSMADMIN_INTERNAL  TABLE              SYSTEM                  1
LBACSYS            TABLE              SYSTEM                  4
OJVMSYS            TABLE              SYSTEM                  3
ORDSYS             TABLE              SYSTEM                  1
OUTLN              TABLE              SYSTEM                  3
SYS                TABLE              SYSTEM                915
SYSTEM             TABLE              SYSTEM                 45
ORDDATA            TABLE              USERS                   7
ORDSYS             TABLE              USERS                   3
SYS                TABLE              USERS                   1
AUDSYS             TABLE PARTITION    AUDIT_TBSP             31
AUDSYS             TABLE PARTITION    SYSAUX                  3
SYS                TABLE PARTITION    SYSAUX                616
SYSTEM             TABLE PARTITION    SYSAUX                 51
SYS                TABLE PARTITION    SYSTEM               1124
SYS                TABLE SUBPARTITION SYSAUX                 32
SYS                TYPE2 UNDO         UNDOTBS1               10

Related Topics
Clusters
Index
Index Partition
Index Subpartition
LOB Index
LOB Partition
LOB Segment
LOB Subpartition
Nested Table
Object Tables
Rollback
Table
Table Partition
Table Subpartition
Type2 UNDO
What's New In 21c
What's New In 23c

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